JPH0212398Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention aims to provide a gas leakage confirmation sealing plug that can be attached to the gas outlet of a pipe through which gas passes, and that can easily confirm that gas is flowing out in a certain direction. .

An embodiment of the present invention will be described below based on the drawings. 1 is a pipe through which gas passes; 2 is a cap formed to airtightly fit from the outer peripheral surface of the end of the gas outlet side of the pipe 1 to the open end. It is made of a flexible material such as rubber. 3 is cap 2
An opening that is long in the horizontal direction on one side, and is cut out in the side wall of the cap 2 so that the width of the opening is maximum at the center and gradually narrows toward both sides. Become. A groove 4 is provided on the inner surface of the cap 2 above the opening 3, and is provided in the direction in which the gas flows out.

Next, an example of how to use the sealing plug for gas leakage confirmation having the above configuration will be described. The pipe 1 is inserted into the mask 5, the cap 2 is inserted into the inside of the mask 5, and the opening 3 is inserted into the mask 5. One end of the hose 6 is connected to the end of the pipe 1 that protrudes outside the mask 5, and the other end of the hose 6 is connected to a portable oxygen supply device with a built-in oxygen generating can or the like. Connect the oxygen outlet of vessel 7. When oxygen is supplied to the hose 6 from an oxygen generating can, etc., the co-supply pressure is applied to the part of the cap 2 that covers the open end of the pipe 1, and that part is pushed up to enlarge the opening 3, causing the cap to open. Since there is a gap between the can 2 and the pipe 1, oxygen passes through the gap and the groove 4 forcefully and flows out from the opening 3 into the back of the mask 5, that is, towards the mouth of the person wearing the mask 5. , an amplified outflow sound is generated while the oxygen passes through the groove 4. When the oxygen supply pressure decreases, the push-up of the part of the cap 2 that covers the open end of the pipe 1 is released, the gap between the cap 2 and the pipe 1 is closed, and at the same time, the outflow of oxygen is stopped. The sound also stops. Note that the pipe 1 can be formed integrally with the hose 6, and the groove 4 can be omitted if the outflow sound does not need to be amplified.

Since the present invention is configured as described above, the gas outlet of the pipe is sealed while gas is not supplied to the pipe, and while gas is supplied to the pipe,
Between the cap and the pipe due to the supply pressure
A gap is formed, and the gas passes through the gap and flows out in the direction of the opening provided in the cap. At the same time, the outflow sound continues, making it easy to confirm that the gas is flowing out in a certain direction. Furthermore, the sound of gas flowing out is generated when it passes through the gap between the cap and the pipe, so it is not a noisy ``bleep'' sound, but a less harsh ``shew'' sound, which may be unpleasant for mask wearers. It doesn't give you any pleasure. Also, by changing the width of the opening,
Gas discharge pressure can be adjusted. It also has advantages such as a simple structure and less chance of failure.

[Brief explanation of the drawing]

Figure 1 is a front view of the gas leakage confirmation sealing plug according to the present invention, Figure 2 is a side view of the same, Figure 3 is a sectional view of the same, and Figure 4 is an example of how the plug is used. FIG. 1...pipe, 2...cap, 3...opening, 4...groove.

Claims (1)

[Scope of utility model registration request] The gas outlet end of a pipe that carries breathing gas is inserted into the inside of the mask, and a cap made of a flexible material is hermetically fitted to the gas outlet of the pipe. A sealing plug for gas leakage confirmation that has an opening that opens toward the mouth.